What is an HFC node?

HFC is a telecommunications industry term for a broadband network which combines optical fiber and coaxial cable. The fiber optic network extends from the cable operator’s headend out to a neighborhood’s hubsite, and finally to a fiber optic node which serves anywhere from 25 to 2000 homes.

What is a node segmentation?

Node segmentation is also putting constraints on existing fiber plants. The 6-to-8 fibers that most MSOs first strung between their headends and HFC nodes in initial network buildouts — and that were once believed to be inexhaustible — are now running out of capacity.

What are the physical elements of HFC network?

HFC is a hierarchical network design. Each headend includes fiber receiver/transmitter pairs that are connected through long strands of fiber to a remote fiber node. A remote fiber node converts received downstream optical signals to electrical signals and puts them onto the attached coaxial cable.

What is a node split?

Node splitting. Splitting of existing nodes into smaller subnodes, each of which can receive independent signals, creates the potential to multiply both downstream and upstream capacity inversely to the ratio of homes in each subnode to those in the original node.

Is HFC the same as cable?

A HFC (hybrid fibre coaxial) connection is basically the same as a cable connection. Historically, this type of connection has been used to provide services like Foxtel. HFC is similar to FTTN in that optic fibre is used to a central node.

Which technique is used in HFC?

Multiple-system operators The original method to transport video over the HFC network and, still the most widely used method, is by modulation of standard analog TV channels which is similar to the method used for transmission of over-the-air broadcast.

How do you split a node?

Physical node-splitting means lighting up another strand of fiber between that node, and the headend. It involves putting a laser transmitter/receiver on each end of the glass, and it costs about $2,500, all-in.

What is HFC design?

Hybrid fiber-coaxial (HFC) is a telecommunications industry term for a broadband network that combines optical fiber and coaxial cable. It has been commonly employed globally by cable television operators since the early 1990s.

Is HFC better than FTTP?

Unlike other fixed-line technology types like FTTC and FTTB, both of which bring fibre closer to the home, an HFC upgrade to FTTP is likely to be more expensive because it will factor in the cost of running cable from the nearest neighbourhood fibre node to your home.

Is HFC connection good?

HFC is capable of achieving top NBN speeds – 100Mbps downloads, and 40Mbps uploads. These speeds fall under the Premium Evening Speed tier of the NBN, and are the same as the top speeds found on other fixed-line connections.

Where is HFC used?

Many are colourless, odourless gases, but some—such as HFC-365mfc (1,1,1,3,3-pentafluorobutane)—are liquids at room temperature. As refrigerants, HFCs are used in a wide variety of cooling systems, from refrigerators and freezers to automotive air-conditioning units.

How many fibers are in a HFC node?

The 6-to-8 fibers that most MSOs first strung between their headends and HFC nodes in initial network buildouts — and that were once believed to be inexhaustible — are now running out of capacity.

Which is the best optical node platform for HFC?

The ARRIS NC4000 series optical node platform supports a wide range of advanced architectures and is ideal for Fiber Deep and HFC applications. It is designed to provide the utmost reliability, flexibility, and adaptability in an outdoor optical node platform.

Why is node segmentation important in the cable industry?

In combination with wavelength multiplexing, node segmentation remains one of the most effective techniques for meeting steady increases in bandwidth demand. The cable infrastructure is a shared environment, making it possible to increase the bandwidth available to each subscriber by reducing the size of a serving area.